What can happen if you use a probe that is too short?
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regrowth of hair
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infection can occur
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ecchymosis can occur
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hair will not regrow
A
Correct answer
Explanation
If a probe is too short, it cannot reach the base of the follicle (the bulb or papilla) to destroy the germinative cells responsible for hair growth. This results in incomplete treatment and subsequent hair regrowth.